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Rain model ITU (26.3) ITU (18.7) (mm/h or
zone)
Availability (average year) 99.9 99.9 %
Antenna aperture 0.96 3.7 metres
Antenna efficiency / gain +41.7 +52.9 % (+ prefix dBi)
Coupling loss .5 .5 dB
Antenna tracking / mispoint error .3 .3 dB
LNB noise figure / temp .7 dB (+ prefix K)
Antenna noise 54 K
Adjacent carrier interference 60 60 dB
Adjacent satellite interference 30 30 dB
Cross polarization interference 30 30 dB
Uplink station HPA output back-off 1 dB
Number of carriers / HPA 1
HPA C/IM (up) 60 dB
Uplink power control 0 dB
Uplink filter truncation loss 0 dB
Required HPA power capability 4 W
Satellite Input Parameters Value Units
Satellite longitude 30.00W degrees
Transponder type TWTA
Receive G/T 4.5 dB/K
Saturation flux density -94 dBW/m2
Satellite attenuator pad 0 dB
Satellite ALC 0 dB
EIRP (saturation) 48 dBW
Transponder bandwidth 36 MHz
Input back off total 10 dB
Output back off total AUTO dB
Intermodulation interference AUTO dB
Number of transponder carriers AUTO
Carrier/Link Input Parameters Value Units
Modulation 4-PSK
Required bit error rate performance 10^-6
Required Eb/No without FEC coding 10.53 dB
Required Eb/No with FEC coding 8 dB
Information rate 0.256 Mbps
Overhead 0 %
FEC code rate 0.875
Spreading gain 0 dB
Reed Solomon code 204/188
(1 + Roll off factor) 1.2
Carrier spacing factor 1.4
Bandwidth allocation step size 2 MHz
System margin 1 dB
Calculations at Saturation Value Units
Gain 1m^2 44.27 dB/m2
Uplink C/No 94.83 dB.Hz
Downlink C/No 101.42 dB.Hz
Total C/No 93.97 dB.Hz
Uplink EIRP for saturation 69.75 dBW
General Calculations Up Down Units
Elevation 25.15 36.03 degrees
True azimuth 213.85 217.29 degrees
Compass bearing 217.06 219.56 degrees
Path distance to satellite 39056.72 38094.49 km
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